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Javascript Operations that return NaN

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admin
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Posts: 45

Javascript Operations that return NaN

Post by admin » Sun Oct 20, 2019 2:36 am

Mathematical operations on values other than numbers return NaN.

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"b" * 3
"cde" - "e"
[1, 2, 3] * 2
An exception: Single-number arrays.

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[2] * [3] // Returns 6
Also, remember that the + operator concatenates strings.

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"a" + "b" // Returns "ab"
Dividing zero by zero returns NaN.

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0 / 0 // NaN
Note: In mathematics generally (unlike in JavaScript programming), dividing by zero is not possible.

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